Auto-increment duplicate

Reports tables that contain two columns with an automatic increment. In MySQL, Microsoft SQL Server, and Db2 dialects, a table can have only one field with a auto-increment option, and this field must be a key.

Example (MySQL):

CREATE TABLE my_table
(
    id INT AUTO_INCREMENT,
    c2 INT AUTO_INCREMENT,
);

The AUTO_INCREMENT constraint for c2 will be highlighted as c1 already has this constraint. To fix the warning, you can make id a primary key and delete AUTO_INCREMENT for c2.

CREATE TABLE my_table
(
    id INT AUTO_INCREMENT PRIMARY KEY,
    c2 INT,
);

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

SqlAutoIncrementDuplicate

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | SQL

Inspection ID: SqlAutoIncrementDuplicateInspection

Suppressing Inspection

You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:

//noinspection SqlAutoIncrementDuplicate

More detailed instructions as well as other ways and options that you have can be found in the product documentation:

Inspection Details
By default bundled with:	CLion 2025.2, DataGrip 2025.2, DataSpell 2025.2, GoLand 2025.2, IntelliJ IDEA 2025.2, JetBrains Rider 2025.2, PhpStorm 2025.2, PyCharm 2025.2, Qodana for .NET 2025.2, Qodana for Go 2025.2, Qodana for JS 2025.2, Qodana for JVM 2025.2, Qodana for PHP 2025.2, Qodana for Ruby 2025.2, RubyMine 2025.2, WebStorm 2025.2

Last modified: 18 September 2025